Tpms system is the abbreviation of "tirepressuremonitoringsystem", which is a real-time monitoring system for automobile tire pressure. It is mainly used for real-time monitoring of tire pressure while the car is driving, and it alerts the tire's air leakage and low air pressure to ensure driving safety. It is a driver. , passengers' safety and security warning system. The tpms system consists of two main parts: a remote tire pressure monitoring module mounted on a car tire and a central monitor (lcd/led display) mounted on the car's driver's cab. The tire pressure and temperature module is directly installed in each tire, and the measured signal is modulated and transmitted through a high-frequency radio wave (RF). A car or van tpms system has 4 or 5 (including spare tires) tpms monitoring modules, and a truck has 8 to 36 tpms monitoring modules. The central monitor receives the signal from the tpms monitoring module and displays the tire pressure and temperature data on the screen for reference by the driver. If there is an abnormality in the pressure or temperature of the tire, the central monitor will issue an alarm signal in response to the abnormal situation to remind the driver to take the necessary measures.